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Finding the Fourth Proportional to 79,705.92, 109,993.34 and 43,895.18

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Solution

The fourth proportional to 79,705.92, 109,993.34 and 43,895.18 is: 60,574.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,705.92 : 109,993.34 = 43,895.18 : x
  2. Step 2: Convert to fraction form
    79,705.92/109,993.34 = 43,895.18/x
  3. Step 3: Cross multiply
    79,705.92x = 109,993.34 × 43,895.18
  4. Step 4: Simplify right side
    79,705.92x = 4,828,177,458.10
  5. Step 5: Solve for x
    x = 4,828,177,458.10/79,705.92
  6. Step 6: Final answer
    x = 60,574.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.